implemented check_value()

9unit.h

@@ -94,4 +94,17 @@ extern void single_test_context(
 	TestResult (*)(TestState *) // the actual test
 );
 
+// Runs a test to check a value
+extern void check_value(
+	TestState *, // the current test state
+	const char *, // a description of the context
+	void *, // the value being checked
+	void *, // the reference value
+	void (*)( // the test function
+		TestState *,
+		void *, // the check value
+		void * // the reference value
+	)
+);
+
 //jl